54 lines
1.6 KiB
Diff
54 lines
1.6 KiB
Diff
From 034a95d055aca8b3c1588eae69c058cf651ae3f7 Mon Sep 17 00:00:00 2001
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From: Eugene Syromiatnikov <esyr@redhat.com>
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Date: Thu, 14 Jun 2018 16:36:08 -0400
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Subject: [PATCH] bpf: Add tech preview taint for syscall
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Message-id: <394af3a9985d1ad9ea6741cb95ff145312d106b9.1528991396.git.esyr@redhat.com>
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Patchwork-id: 8251
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O-Subject: [kernel team] [RHEL8 PATCH v4 3/5] [bpf] bpf: Add tech preview taint for syscall
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Bugzilla: 1559877
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RH-Acked-by: Jiri Benc <jbenc@redhat.com>
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RH-Acked-by: Jesper Dangaard Brouer <brouer@redhat.com>
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Adding tech preview taint for using the eBPF syscall.
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Based on a RHEL 7 commit "bpf: Add tech preview taint for syscall" by
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Jiri Olsa.
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Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1559877
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Brew: https://brewweb.engineering.redhat.com/brew/taskinfo?taskID=16716594
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Upstream Status: RHEL only
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Signed-off-by: Jiri Olsa <jolsa@redhat.com>
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Signed-off-by: Eugene Syromiatnikov <esyr@redhat.com>
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Signed-off-by: Herton R. Krzesinski <herton@redhat.com>
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---
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kernel/bpf/syscall.c | 6 ++++++
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1 file changed, 6 insertions(+)
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diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
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index 082d4d5f24fd..49b267c5a6af 100644
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--- a/kernel/bpf/syscall.c
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+++ b/kernel/bpf/syscall.c
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@@ -3685,11 +3685,17 @@ static int link_update(union bpf_attr *attr)
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SYSCALL_DEFINE3(bpf, int, cmd, union bpf_attr __user *, uattr, unsigned int, size)
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{
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union bpf_attr attr;
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+ static int marked;
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int err;
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if (sysctl_unprivileged_bpf_disabled && !capable(CAP_SYS_ADMIN))
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return -EPERM;
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+ if (!marked) {
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+ mark_tech_preview("eBPF syscall", NULL);
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+ marked = true;
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+ }
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+
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err = bpf_check_uarg_tail_zero(uattr, sizeof(attr), size);
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if (err)
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return err;
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--
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2.26.2
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